Sight leaf



vOQ 115039744 Aug. 5 1924. 1,503,744

M. C. BENNER SIGHT LEAF Filed Dec. 13, 1922 2 sheen-sneer l Miles C. 17e/alger' A 'l TORNEV Aug. 5 1924.

M. C. BENNER S IGHT LEAF Filed Dec. 13 1922 2 Sheets-Sheck 2 1N VENTO/e M les 6T cnn er Off Patented Aug.. 5, 192.4..

PATENT OFFICE.

MILES C. BENNER, 0F SPRINGFIELD, MASSACHUSETTS.

SIGHT LEAF.

Application led December 13, 1922. Serial No. 606,677.

(FILED UNDER THE AGT 0F MARGH 3, 1883, 22 STAT. L., 625.)

To all whom t may concern:

Be it known that I, MILES C'. BENNER, a citizen of the United States, and a resident of Springfield, county of Hampden, and State of Massachusetts, have invented an Improvement in Sight Leaves, of which the following is a specification.

The invention described herein may be used by the Government, or any of its officers or employees in prosecution of work for the Government, or by any other person in the United States, without payment to me of any royalty thereon, in accordance with the act of March 3, 1883.

The subject of this invention is a sight leaf for fire arms, especially intended for rifles and machine guns.

In constructing a sight for fire arms it is desirable that the sight may be readily attached and held firmly in place; that the leaf be capable of folding down out of the way, when desired; that means be provided for adjusting the sight for different ranges and that driftage be automatically compensated for during such adjustment; that adjustment to` provide for windage may be had; and that ready means be provided for determining the setting of the sight and to provide for an arbitrary scale, should such be desired.

The present invention has been devised to accomplish the foregoing desired result-s.

With the foregoing and other objects in view, my invention resides in the novel arrangement and combination of parts and in the details of construction hereinafter described and claimed, it being understood that changes in the precise embodiment of the invention herein disclosed may be made within the scope of what is claimed without departing from the spirit of the invention.

A practical embodiment of the invention is illustrated in the accompanying drawings, wherein:

Fig. 1 is a plan view of a sight constructed in accordance with my invention, the leaf in elevated position;

Fig. 2 is a view in longitudinal section, parts in elevation;

Fig. 3 is a front elevation, partly in section;

Fig. 4 is a section taken on the line 4 4 of Fig. 3;

Fig. 5 is a section on the line 5-5 of Fig. 2;

Fig. 6 is a detailed rear elevation of the slie, a fragment of the leaf being shown; an

Fig. 7 is a fragmentary detail, in side elevation, of the leaf.

Referring to the drawings by numerals of reference:

In carrying out my invention I may pro-- vide a base 10 having means thereon for connecting the same to a gun, such as the dovetailed rib 11 and the plate may be held in place by a set screw 12. Secured to the base plate is a leaf spring 13 the free end of which engages the sight leaf 14 to hold the leaf in elevated or lowered positions.

The sight leaf is mounted on a windage screw 15, which extends transversely of the plate and is journaled in the upstanding sides thereof and on one extending end of which is secured a knurled thumb wheel 16 through which the screw may be manipulated to move the leaf to the right or left in accordance with the direction and force of the wind. In order that the movement of the leaf for windage correction may be determined a bar 17 is aiiixed to the plate 11, adjacent the lower end of the leaf, and this bar is provided with graduations 18 adapted to register with an indicator mark 19 on the leaf. The graduated bar 17 is preferably Ilpade adjustable, as shown most clearly in The leaf is formed with a longitudinally extending slot 20 which is suitably inclined to provide driftage correction and in this slot is a slide 21 formed with a peep hole 22 and a transverse slot 23. In the slot 23 is carried, with a close sliding fit, an elevating nut 24 formed with a central opening 25 of sufficient extent to permit unobstructed vision through the peep hole at all times. The elevating nut may be assembled in the slide after the slide is in place in the slot 2O through an opening 26 formed in the leaf.

The leaf is bored longitudinally to receive an elevating screw 27 which engages threads formed on the elevating nut and which is held in place in the leaf through a pin 28 passing through an aperture formed in the leaf and engaging an annular groove formed in the shank of the screw. A knurled thumb Windage screw journaled in said base plate, a sight leaf mounted on the Windage screw, means for retaining the leaf in elevated or lowered positions, said leaf provided With a slot extending longitudinally thereof and inclined to provide for driftage correction, a slide in the slot, said sli-de provided With a peep hole and a transverse slot, an elevatingenut in the transverse slot of the slide having a central opening adapted to register with the peep hole and an elevating screw engaging the nut for moving the slide MILES C. BENNER. 

